Notes:
From several ornamental pear trees at a local McDonald’s: this very common, very yellow, with hints of green in some of the newer growth lobes. Surface yellow to slightly yellow-green; reverse mostly light gray with some black where attached to bark, edged in yellow-green. Cup-like structures on surface are orange inside the cup, but edged in white. With the manager’s permission, took a collection of the lichen today as a voucher. Hope to get to Powell’s Book Store tomorrow to start my lichenology library.